Divided stabilizer having an optimized spring rate

ABSTRACT

It is a purpose in a divided stabilizer to increase the springy lengths of the two stabilizer components. The stabilizer components ( 1, 1′, 2, 2 ′) have respective rotary parts ( 4, 4′, 5, 5 ′) attached and the rotary parts in turn have respective rotary wings ( 14, 16 ) attached. A cover flange ( 8 ′) is formed at the outer rotary part ( 4 ′). An outer rotary wing ( 14 ) is radially inwardly directed and attached to the outer rotary part ( 4 ′). An inner rotary wing ( 16 ) is radially outwardly directed and is attached to the inner rotary part ( 5 ′). A second stabilizer part ( 2, 2 ′) is attached to the inner rotary part ( 5 ′), wherein the outer rotary part ( 4 ′) with the outer rotary wing ( 14 ) moves relative to the liner rotary part ( 5 ′) with the inner rotary wing ( 16 ) up to the point where the outer rotary wing ( 14 ) contacts the inner rotary wing ( 16 ). The rotary wings ( 14, 16 ) are rotatable relative to each other up to a predetermined angle. The stabilizer is coordinated in parallel to an axle of a vehicle.

(b) CROSS-REFERENCE TO RELATED APPLICATIONS

(not applicable)

(c) STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

(not applicable)

(d) INCORPORATION-BY-REFERENCE OF MATERIAL SUBMITTED ON A COMPACT DISC

(See 37 CFR 1.52(e)(5) and MPEP 608.05. Computer program listings (37CFR 1.96(c)), “Sequence Listings” (37 CFR 1.821(c)), and tables havingmore than 50 pages of text are permitted to be submitted on compactdiscs.) or REFERENCE TO A “MICROFICHE APPENDIX” (See MPEP 608.05(a).“Microfiche Appendices” were accepted by the Office until Mar. 1, 2001.)(not applicable)

(e) BACKGROUND OF THE INVENTION

(1) Field of the Invention

The invention relates to a subdivided stabilizer according to thefeatures of the preamble of claim 1.

Such stabilizers are employed in particular in vehicular technology.

(2) Description of Related Art Including Information Disclosed Under 37CFR 1.97 and 1.98.

A stabilizer is coordinated in principle to each axle of a motorvehicle, wherein the stabilizer operates according to the torsion barprinciple, and wherein the stabilizer is disposed parallel to thevehicle axle, and wherein the stabilizer is attached at two ends at thewheel suspension. This stabilizer prevents or, respectively, attenuatessubstantially the transfer of the rolling motions caused by the roadwaysituation and starting with the wheels onto the vehicle. Such rollingmotions occur in particular in roadway curves or in case of non-evenroad conditions.

Single piece stabilizers are constructed in their dimensioning and theirmaterial qualities to a predetermined spring rate such that thestabilizers accept the torsion forces only in a certain order ofmagnitude and are capable to furnish corresponding counter forces.Therefore single piece stabilizers react to different loads either toosoft or too hard, which is disadvantageous with respect to drivingcomfort. For this reason single piece stabilizers are in principal onlyconditionally suited for motor vehicles, where the motor vehicles arefurnished both for the use of the road as well as the use cross-country.Therefore a subdivided stabilizer is employed in vehicles intended forthe road and for cross-country wherein the two stabilizer parts of thestabilizer are connected to each other through an actuator.

Such an actuator can for example be a hydraulic swivel motor, as isdescribed in the German printed Patent DE 19742882 C1 of the applicantor the actuator can also be an elastic revolving turret as is known fromthe German printed Patent DE 4342360 C2. Another actuator is known fromthe German printed Patent DE 19923100 C1 of the applicant, whichactuator is performed as a switchable coupling or a clutch and whichactuator is furnished additionally with a coupling piece connecting thestabilizer parts shape matchingly to each other.

Each of these actuators in principle comprises an outer rotary part,wherein the outer rotary part is connected to one of the two stabilizerparts through a cover and the flange, and an inner rotary part, whereinthe inner rotary part is connected to the other stabilizer part througha shaft. The two rotary parts are furnished rotatable against each otherover a limited angle. Conventional clamping sleeves or screw sleeves areapplied as connection parts between the flange and the one stabilizerpart as well as between the shaft and the other stabilizer part ingeneral. Such subdivided stabilizers are suitable for the most differentrequirements. The divided stabilizers are however associated with anessential disadvantage. Thus each actuator represents a compact unitwith a substantial longitudinal extension, which longitudinal extensionto a corresponding degree loads the effective spring length of the twostabilizer parts.

The same spring paths entail thereby higher torsion tensions in the twostabilizer parts, which requires at the same time higher spring rates.The higher spring rates lead to a loss in quality and in the lowering ofthe driving comfort.

BRIEF SUMMARY OF THE INVENTION

There exists therefore the task to optimally increase the effectivespringing lengths of the two stabilizer parts of a subdivided stabilizerof the present kind.

This object is accomplished by the characterizing features of claim 1.Advantageous embodiments result from the claims 2 and 3.

The invention eliminates the recited disadvantages of thestate-of-the-art.

The invention is to be explained in more detail in the following by wayof two embodiment examples.

(g) BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)

There is shown in:

FIG. 1: an actuator in the structure of a hydraulic swivel motor,

FIG. 2: an actuator in the embodiment of a rotary clutch in a sectionalview along the plane AA of FIG. 3,

FIG. 3: another sectional plane of the rotary clutch,

FIG. 4: a perspective partial view of essential components of the rotaryclutch.

DETAILED DESCRIPTION OF THE INVENTION

A subdivided stabilizer comprises a first stabilizer part 1 and a secondstabilizer part 2, which stabilizer part 1 and stabilizer part 2 areboth connected through a hydraulic swivel motor 3 according to a firstembodiment illustrated in FIG. 1. Both the two stabilizer parts 1 and 2as well as the hydraulic swivel motor 3 are disposed on a common axis.Here the swivel motor 3 comprises an outer rotary part 4 and an innerrotary part 5, wherein the outer rotary part 4 is furnished with atleast one outer rotary wing not illustrated here, wherein the rotarywing in each case is fixedly connected to the outer rotary part 4 over acertain torque transferring axial length x and wherein the rotary wingis directed radially inwardly. The inner rotary part 5 is furnished withat least one inner rotary wing 6, wherein the inner rotary wing 6 isfixedly connected to the inner rotary part 5 over the same torquetransferring axial length x and wherein the inner rotary wing 6 isdirected radially outwardly. Here the outer rotary wing and the innerrotary wing 6 are furnished in their structure such that the outerrotary wing and the inner rotary wing 6 form between themselves at leasttwo free spaces. The outer rotary wings and the inner rotary wings 6 arefreely rotatable relative to each other in the region of these freespaces until the outer rotary wing and the inner rotary wing 6 come torest on a mutual stop.

The kind of and therewith the force transferring axial length x of therespective attachment between the outer rotary part 4 and the outerrotary wing or, respectively between the inner rotary part 5 and theinner rotary wing 6 are determined by the torque to be transferred.

In contrast the size of the outer rotary wing and of the inner rotarywing 6 results from the torque to be generated by the hydraulic swivelmotor 3. The torque generating axial length is the basis of this size ofthe outer and of the inner rotary wing 6, wherein the torque generatingaxial length in this example embodiment corresponds to the torquetransferring length. However, it is also possible that the torquetransferring length of the two rotary wings 6 is smaller than theirrotary torque generating length.

The outer rotary wings and the inner rotary wings 6 therefore aredisposed on a common first radial force transferring plane 7 for forcetransfer from the axis of the second stabilizer part 2 with the outerrotary part 4 and backward. This first radial force transferring plane 7is illustrated as a dash dotted line for better pictorialization.

The outer rotary part 4 with its outer rotary wing and the inner rotarypart 5 with its inner rotary wing 6 find an axial closure through acover flange 8 on the one hand and through a bearing cover 9 on theother hand such that the free spaces between the outer and the innerrotary wing 6 are formed as pressure chambers. These pressure chambersare sealed toward the outside and toward the inside in a correspondingway and are connected to a hydraulic plant.

The cover flange 8 is formed in a particular way as a single piecetogether with the first stabilizer part 1 and the cover flange 8therefore has on the one hand a form and corresponding dimensions, whichallow a cover function at the hydraulic swivel motor 3 and on the otherhand a torque transferring function. Here the torque transferringfunction is determined essentially by the axial length of the coverflange 8, wherein the axial length of the cover flange 8 therewithrepresents a further force transferring length y, namely for the forcetransfer from the first stabilizer part 1 and the outer rotary part 4and backward. Thus there results a second radial force transfer

The cover flange 8 is furnished on its inner side with the finitebearing hole 11 for receiving the second stabilizing part 2 with itsinner rotary part 5. The bearing cover 9 disposed on the oppositelysituated side of the hydraulic swivel motor 3 is constructedconventionally and therefore also has a passing through bearing bore 12for receiving of the inner rotary part 5. Both the bearing cover 9 aswell as the cover flange 8 are attached at the outer rotary part 4 byway of screws or, respectively, by a welding connection not illustrated.The inner rotary part 5 is now in a particular way forming one part withthe second stabilizer part 2 and is supported in the bearing cover 9 andthe cover flange 8. For this purpose, the inner rotary part 5 hasdimensions up to over the region of the first radial force transferplane 7, wherein the dimensions coincide substantially with thedimensions of the second stabilizer part 2. The inner rotary wings 6 areattached on the inner rotary part 5 in a conventional way by gear teeth,by clamping or the like.

A force flux results with a corresponding and different load of the twostabilizer parts 1, 2, wherein the force extends on the one hand in thearrow direction drawn, for example within the first stabilizer part 1and in axial direction up to second radial force transfer plane 10,wherein the force flux extends on this radial force transfer plane 10 upto the high level of the outer rotary part 4, wherein the force fluxpropagates furthermore within the outer rotary part 4 in axial directionup to the first radial force transfer plane 7 and wherein the force fluxexpands on this first force transfer plane 7 up to the inner rotary part5 and from there axially within the second stabilizer part 2.

A subdivided stabilizer comprises a first stabilizer part 1′ and asecond stabilizer part 2′ according to a second embodiment according toFIGS. 2 through 4, wherein the first stabilizer part 1′ and the secondstabilizer part 2′ are both connected in this embodiment however with arotary clutch 13.

The clutch 13 also has an outer rotary part 4′ in the shape of acylindrical casing, wherein the outer rotary part 4′ is covered toward afront side through a cover flange 8′ and is connected fixedly againstrotation to the first stabilizer part 1′. Here the cover flange 8′ isfurnished with a force transferring axial length y, wherein the axiallength y is disposed on the second force transfer plane 10′.

The outer rotary part 4′ is delimited to the other front side with thebearing cover 9′ and is equipped with a fixed position outer rotary wing14, wherein the outer rotary wing 14 is directed inwardly. This rotarywing 14 is disposed at a predetermined position to be more nearlydesignated at another location.

The rotary clutch 13 also has an inner rotary part 5′, wherein the innerrotary part 5′ is formed as a single piece with the second stabilizerpart 2′. This inner rotary part 5′ is supported on the one hand in thebearing cover 9′ and is supported on the other hand in the cover flange8′. The inner rotary part 5′ is equipped with a toothing or gearing,wherein a two-part force transfer element 15 is fixed against rotationset onto the toothing or gearing. The force transfer element 15 extendsover certain defined effective force transferring length x and thusdraws the first radial force transfer plane 7′ between the inner rotarypart 5′ and the force transfer element 15. The force transfer element 15is furthermore furnished with an inner rotary wing 16 disposed radiallywith respect to the inner rotary pan 5′ on the front side pointing tothe bearing cover 9′, wherein the inner rotary wing 16 is disposed suchthat the inner rotary wing 16 is disposed on a radial plane togetherwith the outer rotary wing 14 of the outer rotary part 4′. The tworotary wings 14 and 16 extend again over a certain axial forcetransferring length and draw this way the third radial force transferplane 17 for force transfer between the force transfer element 15 andthe outer rotary wing 14 of the outer rotary part 4′.

The inner rotary wing 16 and the outer rotary wing 14 are of suchdimensions and disposed such to each other that the inner rotary wing 16and outer rotary wing 14 form two radially and oppositely disposed freespaces 18 between themselves.

According to a further axial extension in the action of the bearingcover 9′, there is disposed a coupling piece 19 slidably supported onthe inner rotary part 5′ next to the third radial force transfer plane17. This coupling piece 19 comprises a guide part 20 and two equal andoppositely disposed coupling parts 21. Here the two coupling parts 21are equipped with side ways and conically extending guide faces and thecoupling parts 21 are constructed such in their dimensions that thecoupling parts are capable of closing without play the two free spaces18 between the two rotary wings 14 and 16. This coupling piece 19 isfurthermore loaded by a compression spring 22, wherein the compressionspring 22 is supported at the bearing cover 9′ and wherein thecompression spring 22 is disposed in a spring chamber 23 of the casing.The spring chamber 23 is additionally formed as a pressure space andconnected to a hydraulic plant through an inlet connection piece 24. Ahydraulic pressure this way to be builtup in the spring chamber 23supports the force of the compression spring 22. The coupling piece 19is constructed loadable with a hydraulic pressure opposing thecompression spring 22 on the side disposed remote from the compressionspring 22 if required, wherein a corresponding inlet opening 25 for thecompression liquid is disposed in the cover flange 8′.

A sensor 26 for determining the position of the movable coupling piece19 is disposed in the casing of the outer rotary part 4′.

The coupling piece 19 is coupled in the starting position such that thecoupling parts 21 are fitted free of play in the free spaces between thetwo rotary wings 14, 16.

Force flow in the arrow direction recognizable from FIG. 4 results incase of a different loading of the two stabilizer parts 1, 2 for exampleon the one hand of the stabilizer part 1′ in axial direction up to thesecond radial force transfer plane 10′, on the second radial forcetransfer plane 10′ up to the outer rotary part 4′ and there in axialdirection up to the third radial force transfer plane 17. The forceflows axially back from the third radial force transfer plane 17 up tothe first radial force transfer plane 7′ and then through the firstradial force transfer plane 7′ up to the inner rotary part 5′, fromwhere the force propagates in axial direction within the secondstabilizer part 2′.

The coupling parts 21 are disengaged in the decoupled state from therotary wings 14, 16 such that initially a free angle of rotation has tobe overcome for each rotary direction in case of a different load of thetwo stabilizer parts 1′, 2′ before the two rotary wings 14, 16 directlycome to rest. The force flows then in the same way as in the coupledstate.

LIST OF REFERENCE NUMERALS

-   1, 1′ first stabilizer part-   2, 2′ second stabilizer part-   3 hydraulic swivel motor-   4, 4′ outer rotary part-   5, 5′ inner rotary part-   6 inner rotary wing-   7, 7′ first radial force transfer plane-   8, 8′ cover flange-   9, 9′ bearing cover-   10, 10′ second radial force transfer plane-   11, 11′ finite bearing bore hole-   12 passing through bearing role-   13 rotary clutch-   14 outer rotary wing-   15 force transfer element-   16 inner rotary wing-   17 third radial force transfer plane-   18 free space-   19 coupling piece-   20 guide piece-   21 coupling part-   22 compression spring-   23 spring chamber-   24 inlet connection piece-   25 inlet opening-   26 sensor

1. A subdivided stabilizer with optimized spring rate, comprising afirst stabilizer part (1, 1′); a second stabilizer part (2, 2), an outerrotary part (4′) with an outer rotary wing (14), wherein the outerrotary wing (14) is radially inwardly directed; an inner rotary part(5′) with an inner rotary wing (16), wherein the inner rotary wing (6,16) is radially outwardly directed, wherein the outer rotary part (4′)with the outer rotary wing (14) and the inner rotary part (5′) with therotary wing (16) form a rotary clutch (13), and wherein the firststabilizer part (1, 1′) and the second stabilizer part (2, 2′) areconnected to each other with the rotary clutch (13), wherein the innerrotary part (5′) is rotatable relative to the outer rotary part (4′) toa predetermined extent, wherein free spaces (18) for a coupling piece(19) exist between the outer rotary wing (14) and the inner rotary wing(16) and wherein the outer rotary part (4′) is connected to the firststabilizer part (1′) through a second radial force transfer plane (10′)and wherein the inner rotary part (5′) is connected to the secondstabilizer part (2′) through a first radial force transfer plane (7′); acover flange (8′) formed at the outer rotary part (4′) wherein the firststabilizer part (1,1′) is formed as a single piece with the cover flange(8′) of the outer rotary part (4′) and the first stabilizer part (1,1′)extends up to the second radial force transfer plane (10′) with springrate determining dimensions of the first stabilizer part (1′), whereinthe second stabilizer part (2′) is formed as a single piece with theinner rotary part (5′) and extends up to the first radial force transferplane (7′) with spring rate determining dimensions of the secondstabilizer part (2′), wherein a first force transferring axial length(x, y) is coordinated to the first radial force transfer plane (7′),wherein a second force transferring axial length (x, y) is coordinatedto the second radial force transfer plane (10′), and wherein the firstforce transferring axial length (x, y) and the second force transferringaxial length (x, y) are disposed immediately neighboring, wherein theinner rotary wing (16) of the inner rotary part (5′) and the outerrotary wing (14) of the outer rotary part (4′) form a third radial forcetransfer plane (17) and wherein the third radial force transfer plane(17) is disposed on the side of the first radial force transfer plane(7′) located toward the second stabilizer part (2′), wherein the outerrotary wing (14) is fixedly connected to the outer rotary part (4) overa certain force transferring axial length (x), and wherein the innerrotary wing (6) is fixedly connected to the inner rotary part (5) overthe same force transferring axial length (x), and wherein the outerrotary wing (14) and the inner rotary wing (6) are freely rotatablerelative to each other in a region of the free spaces (18) until theouter rotary wing (14) and the inner rotary wing (6) come to rest on amutual stop, wherein the force transferring axial length x of theattachment between the outer rotary part (4) and the outer rotary wing(14) or, respectively between the inner rotary part (5) and the innerrotary wing (6) is determined by the torque to be transferred, andwherein a size of the outer rotary wing (14) and of the inner rotarywing (6) results from the torque to be generated by a hydraulic swivelmotor (3), and wherein the torque generating axial length is the basisof this size of the outer rotary wing (14) and of the inner rotary wing(6).
 2. Subdivided stabilizer according to claim 1, characterized inthat the second stabilizer part (2, 2′) with its inner rotary part (5′)is formed as a single piece and wherein the first stabilizer part (1,1′) with its cover flange (8′) is formed as a single piece.
 3. Thesubdivided stabilizer according to claim 1 further comprising a forcetransfer element (15) forming the first radial force transfer plane (7′)and wherein the force transfer element (15) is connected fixed againstrotation to the inner rotary part (5), and wherein the force transferelement (15) is connected as a single part with the inner rotary wing(16).
 4. The subdivided stabilizer according to claim 1 wherein a torquegenerating axial length corresponds to the force transferring length x,wherein the torque is transferred from the first stabilizer part (1, 1′)through the cover flange (8, 8′) radially on the second radial forcetransferring plane (10, 10′), then axially through the outer rotary part(4, 4′) to the first force transferring plane (7, 7′), then radiallythrough the inner rotary wing (6, 16) and through the inner rotary part(5, 5′) to the second stabilizer part (2, 2′).
 5. The subdividedstabilizer according to claim 1 wherein a torque transferring length xof the inner rotary wing (16) is smaller than a rotary torque generatinglength, wherein the torque is transferred in case of a different loadingof the first stabilizer part (1′) and of the second stabilizer part (2′)from the first stabilizer part (1′) in axial direction to the secondradial force transfer plane (10′), then through the cover flange (8′)radially on the second radial force transferring plane (10′), then inaxial direction through the outer rotary part (15) to the third forcetransferring plane (17), then in axial direction back through the innerrotary wing (16) to the first force transferring plane (7′), thenradially to the inner rotary part (5′), from where the force propagatesin axial direction within the second stabilizer part (2′).
 6. Thesubdivided stabilizer according to claim 1 wherein the outer rotary part(4) with its outer rotary wing (14) and the inner rotary part (5) withits inner rotary wing (6) find an axial closure through the cover flange(8) connected with the first stabilizer part (1, 1′) and through abearing cover (9), wherein the free spaces between the outer rotary wing(14) and the inner rotary wing (6) are formed as pressure chamberssealed toward the outside and inside in a corresponding way andconnected to a hydraulic plant.
 7. A subdivided stabilizer withoptimized spring rate, comprising a first stabilizer part (1, 1′); asecond stabilizer part (2, 2), an outer rotary part (4′) with an outerrotary wing (14), wherein the outer rotary wing (14) is radiallyinwardly directed; an inner rotary part (5′) with an inner rotary wing(16), wherein the inner rotary wing (6, 16) is radially outwardlydirected, wherein the outer rotary part (4′) with the outer rotary wing(14) and the inner rotary part (5′) with the rotary wing (16) form arotary clutch (13), and wherein the first stabilizer part (1, 1′) andthe second stabilizer part (2, 2′) are connected to each other with therotary clutch (13), wherein the inner rotary part (5′) is rotatablerelative to the outer rotary part (4′) to a predetermined extent,wherein free spaces (18) for a coupling piece (19) exist between theouter rotary wing (14) and the inner rotary wing (16) and wherein theouter rotary part (4′) is connected to the first stabilizer part (1′)through a second radial force transfer plane (10′) and wherein the innerrotary part (5′) is connected to the second stabilizer part (2′) througha first radial force transfer plane (7′); a cover flange (8′) formed atthe outer rotary part (4′) wherein the first stabilizer part (1,1′) isformed as a single piece with the cover flange (8′) of the outer rotarypart (4′) and the first stabilizer part (1,1′) extends up to the secondradial force transfer plane (10′) with spring rate determiningdimensions of the first stabilizer part (1′), wherein the secondstabilizer part (2′) is formed as a single piece with the inner rotarypart (5′) and extends up to the first radial force transfer plane (7′)with spring rate determining dimensions of the second stabilizer part(2′), wherein a first force transferring axial length (x, y) iscoordinated to the first radial force transfer plane (7′), wherein asecond force transferring axial length (x, y) is coordinated to thesecond radial force transfer plane (10′), and wherein the first forcetransferring axial length (x, y) and the second force transferring axiallength (x, y) are disposed immediately neighboring, wherein the innerrotary wing (16) of the inner rotary part (5′) and the outer rotary wing(14) of the outer rotary part (4′) form a third radial force transferplane (17) and wherein the third radial force transfer plane (17) isdisposed on the side of the first radial force transfer plane (7′)located toward the second stabilizer part (2′), wherein the outer rotarypart (4) with its outer rotary wing (14) and the inner rotary part (5)with its inner rotary wing (6) find an axial closure through the coverflange (8) connected with the first stabilizer part (1, 1′) and througha bearing cover (9), wherein the free spaces between the outer rotarywing (14) and the inner rotary wing (6) are formed as pressure chamberssealed toward the outside and inside in a corresponding way andconnected to a hydraulic plant, wherein the cover flange (8) performs acover function at a hydraulic swivel motor (3) and a torque transferringfunction, wherein an axial length of the cover flange (8) represents afurther force transferring length y for a force transfer from the firststabilizer part (1) to the outer rotary part (4) and backward on thesecond radial force transfer plane (10).
 8. A subdivided stabilizer withoptimized spring rate, comprising a first stabilizer part (1, 1′); asecond stabilizer part (2, 2), an outer rotary part (4′) with an outerrotary wing (14), wherein the outer rotary wing (14) is radiallyinwardly directed; an inner rotary part (5′) with an inner rotary wing(16), wherein the inner rotary wing (6, 16) is radially outwardlydirected, wherein the outer rotary part (4′) with the outer rotary wing(14) and the inner rotary part (5′) with the rotary wing (16) form arotary clutch (13), and wherein the first stabilizer part (1, 2′) andthe second stabilizer part (2, 2′) are connected to each other with therotary clutch (13), wherein the inner rotary part (5′) is rotatablerelative to the outer rotary part (4′) to a predetermined extent,wherein free spaces (18) for a coupling piece (19) exist between theouter rotary wing (14) and the inner rotary wing (16) and wherein theouter rotary part (4′) is connected to the first stabilizer part (2′)through a second radial force transfer plane (10′) and wherein the innerrotary part (5′) is connected to the second stabilizer part (2′) througha first radial force transfer plane (7′); a cover flange (8′) formed atthe outer rotary part (4′) wherein the first stabilizer part (1,1′) isformed as a single piece with the cover flange (8′) of the outer rotarypart (4′) and the first stabilizer part (1,1′) extends up to the secondradial force transfer plane (10′) with spring rate determiningdimensions of the first stabilizer part (1′), wherein the secondstabilizer part (2′) is formed as a single piece with the inner rotarypart (5′) and extends up to the first radial force transfer plane (7′)with spring rate determining dimensions of the second stabilizer part(2′), wherein a first force transferring axial length (x, y) iscoordinated to the first radial force transfer plane (7′), wherein asecond force transferring axial length (x, y) is coordinated to thesecond radial force transfer plane (10′), and wherein the first forcetransferring axial length (x, y) and the second force transferring axiallength (x, y) are disposed immediately neighboring, wherein the innerrotary wing (16) of the inner rotary part (5′) and the outer rotary wing(14) of the outer rotary part (4′) form a third radial force transferplane (17) and wherein the third radial force transfer plane (17) isdisposed on the side of the first radial force transfer plane (7′)located toward the second stabilizer part (2′), wherein the outer rotarypart (4) with its outer rotary wing (14) and the inner rotary part (5)with its inner rotary wing (6) find an axial closure through the coverflange (8) connected with the first stabilizer part (1, 1′) and througha bearing cover (9), wherein the free spaces between the outer rotarywing (14) and the inner rotary wing (6) are formed as pressure chamberssealed toward the outside and inside in a corresponding way andconnected to a hydraulic plant, wherein the cover flange (8) isfurnished on an inner side in a finite bearing hole (11) for receivingthe second stabilizing part (2) with its inner rotary part (5), whereinthe bearing cover (9) comprises a passing through bearing bore (12) forreceiving of the inner rotary part (5), wherein both the bearing cover(9) and the cover flange (8) are attached at the outer rotary part (4)with screws or by a welding connection, wherein the inner rotary wing(6) is attached on the inner rotary part (5) by gear teeth or byclamping.
 9. A subdivided stabilizer with optimized spring rate,comprising a first stabilizer part (1, 1′); a second stabilizer part (2,2), an outer rotary part (4′) with an outer rotary wing (14), whereinthe outer rotary wing (14) is radially inwardly directed; an innerrotary part (5′) with an inner rotary wing (16), wherein the innerrotary wing (6, 16) is radially outwardly directed, wherein the outerrotary part (4′) with the outer rotary wing (14) and the inner rotarypart (5′) with the rotary wing (16) form a rotary clutch (13), andwherein the first stabilizer part (1, 1′) and the second stabilizer part(2, 2′) are connected to each other with the rotary clutch (13), whereinthe inner rotary part (5′) is rotatable relative to the outer rotarypart (4′) to a predetermined extent, wherein free spaces (18) for acoupling piece (19) exist between the outer rotary wing (14) and theinner rotary wing (16) and wherein the outer rotary part (4′) isconnected to the first stabilizer part (1′) through a second radialforce transfer plane (10′) and wherein the inner rotary part (5′) isconnected to the second stabilizer part (2′) through a first radialforce transfer plane (7′); a cover flange (8′) formed at the outerrotary part (4′) wherein the first stabilizer part (1, 1′) is formed asa single piece with the cover flange (8′) of the outer rotary part (4′)and the first stabilizer part (1, 1′) extends up to the second radialforce transfer plane (10′) with spring rate determining dimensions ofthe first stabilizer part (2′), wherein the second stabilizer part (2′)is formed as a single piece with the inner rotary part (5′) and extendsup to the first radial force transfer plane (7′) with spring ratedetermining dimensions of the second stabilizer part (2′), wherein afirst force transferring axial length (x, y) is coordinated to the firstradial force transfer plane (7′), wherein a second force transferringaxial length (x, y) is coordinated to the second radial force transferplane (10′), and wherein the first force transferring axial length (x,y) and the second force transferring axial length (x, y) are disposedimmediately neighboring, wherein the inner rotary wing (16) of the innerrotary part (5′) and the outer rotary wing (14) of the outer rotary part(4′) form a third radial force transfer plane (17) and wherein the thirdradial force transfer plane (17) is disposed on the side of the firstradial force transfer plane (7′) located toward the second stabilizerpart (2′), wherein the coupling piece (19) comprises a guide part (20)and two equal and oppositely disposed coupling parts (21) equipped withside ways and conically extending guide faces, wherein the couplingparts (21) are capable of closing the free spaces (18) between the outerrotary wing (14) and the inner rotary wing (16) without play, acompression spring (22) supported at a bearing cover (9′) and disposedin a spring chamber (23), wherein the spring chamber (23) is formed as apressure space and connected to a hydraulic plant through an inletconnection piece (24), wherein the coupling piece (19) is loadable witha hydraulic pressure created in the spring chamber (23) opposing thecompression spring (22) on the side disposed remote from the compressionspring (22), wherein the hydraulic pressure supports the force of thecompression spring (22), wherein a corresponding inlet opening (25) fora hydraulic pressure creation is disposed in the cover flange (8′). 10.A subdivided stabilizer with optimized spring rate, comprising a firststabilizer part (1, 1′); a second stabilizer part (2, 2), an outerrotary part (4′) with an outer rotary wing (14), wherein the outerrotary wing (14)is radially inwardly directed; an inner rotary part (5′)with an inner rotary wing (16), wherein the inner rotary wing (6, 16) isradially outwardly directed, wherein the outer rotary part (4′) with theouter rotary wing (14) and the inner rotary part (5′) with the rotarywing (16) form a rotary clutch (13), and wherein the first stabilizerpart (1, 1′) and the second stabilizer part (2, 2′) are connected toeach other with the rotary clutch (13), wherein the inner rotary part(5′) is rotatable relative to the outer rotary part (4′) to apredetermined extent, wherein free spaces (18) for a coupling piece (19)exist between the outer rotary wing (14) and the inner rotary wing (16)and wherein the outer rotary part (4′) is connected to the firststabilizer part (1′) through a second radial force transfer plane (10′)and wherein the inner rotary part (5′) is connected to the secondstabilizer part (2′) through a first radial force transfer plane (7′); acover flange (8′) formed at the outer rotary part (4′) wherein the firststabilizer part (1,1′) is formed as a single piece with the cover flange(8′) of the outer rotary part (4′) and the first stabilizer part (1,1′)extends up to the second radial force transfer plane (10′) with springrate determining dimensions of the first stabilizer part (1′), whereinthe second stabilizer part (2′) is formed as a single piece with theinner rotary part (5′) and extends up to the first radial force transferplane (7′) with spring rate determining dimensions of the secondstabilizer part (2′), wherein a first force transferring axial length(x, y) is coordinated to the first radial force transfer plane (7′),wherein a second force transferring axial length (x, y) is coordinatedto the second radial force transfer plane (10′), and wherein the firstforce transferring axial length (x, y) and the second force transferringaxial length (x, y) are disposed immediately neighboring, wherein theinner rotary wing (16) of the inner rotary part (5′) and the outerrotary wing (14) of the outer rotary part (4′) form a third radial forcetransfer plane (17) and wherein the third radial force transfer plane(17) is disposed on the side of the first radial force transfer plane(7′) located toward the second stabilizer part (2′), a sensor (26) fordetermining a position of a movable coupling piece (19) disposed in theouter rotary part (4′).
 11. A subdivided stabilizer with optimizedspring rate, comprising a first stabilizer part (1, 1′); a cover flange(8, 8′), wherein the first stabilizer part (1, 1′) is formed as a singlepiece with the cover flange (8, 8′); an outer rotary part (4′), whereinthe cover flange (8, 8′) is formed at the outer rotary part (4′); anouter rotary wing (14) attached to the outer rotary part (4′), whereinthe outer rotary wing (14) is radially inwardly directed; an innerrotary wing (6, 16), wherein the inner rotary wing (6, 16) is radiallyoutwardly directed; an inner rotary part (5′), wherein the inner rotarywing (6, 16) is attached to the inner rotary part (5′); a secondstabilizer part (2, 2′), wherein the second stabilizer part (2, 2′) isattached to the inner rotary part (5′), wherein the outer rotary part(4′) with the outer rotary wing (14) moves relative the inner rotarypart (5′) with the inner rotary wing (6, 16) up to a point where theouter rotary wing (14) contacts the inner rotary wing (6, 16), andwherein the first stabilizer part (1, 1′) and the second stabilizer part(2, 2′) are connected to each other with the outer rotary wing (14) andthe inner rotary wing (6, 16), wherein the inner rotary part (5′) isrotatable relative to the outer rotary part (4′) to a predeterminedextent, wherein free spaces (18) for a movable coupling piece (19) existbetween the outer rotary wing (14) and the inner rotary wing (6, 16);wherein the second stabilizer part (2, 2′) is formed as a single piecewith the inner rotary part (5′), wherein the movable coupling piece (19)comprises two equal and oppositely disposed coupling parts (21) equippedwith side ways and conically extending guide faces, wherein the couplingparts (21) are capable of closing the free spaces (18) between the outerrotary wing (14) and the inner rotary wing (6, 16) without play; whereinthe coupling parts (21) are disengaged in the decoupled state from theouter rotary wing (14) and from the inner rotary wing (6, 16) such thatinitially a free angle of rotation has to be overcome for each directionin case of a different load of the first stabilizer part (1, 1′) and ofthe second stabilizer part (2, 2′) before the outer rotary wing (14) andthe inner rotary wing (6, 16) come to rest.
 12. The subdividedstabilizer according to claim 11 further comprising a force transferelement (15) connected fixed against rotation to the inner rotary part(5), wherein the force transfer element (15) forms a single part withthe inner rotary wing (6, 16).
 13. The subdivided stabilizer accordingto claim 11 wherein the inner rotary wing (16) is disposed an a radialplane together with the outer rotary wing (14) of the outer rotary part(4′), wherein the outer rotary wing (14) and the inner rotary wing (16)extend over a certain axial length, wherein the inner rotary wing (16)and the outer rotary wing are of such dimensions and disposed such toeach other that the inner rotary wing (16) and the outer rotary ring(14) form two radially and oppositely disposed free spaces (18) betweenthemselves.
 14. The subdivided stabilizer according to claim 11 whereinthe cover flange (8, 8′) is furnished on an inner side in a finitebearing hole (11) for receiving the second stabilizing part (2, 2′) withits inner rotary part (5), wherein a bearing cover (9) comprises apassing through bearing bore (12) for receiving of the inner rotary part(5), wherein both the bearing cover (9) and the cover flange (8, 8′) areattached at the outer rotary part (4) with screws or by a weldingconnection, wherein the inner rotary wing (6) is attached at the innerrotary part (5) by gear teeth or by clamping.
 15. A subdividedstabilizer with optimized spring rate, comprising a first stabilizerpart (1, 1′); a cover flange (8′), wherein the first stabilizer part (1,1′) is formed as a single piece with the cover flange (8′); an outerrotary part (4′), wherein the cover flange (8′) is formed at the outerrotary part (4′); an outer rotary wing (14) attached to the outer rotarypart (4′), wherein the outer rotary wing (14) is radially inwardlydirected; an inner rotary wing (16), wherein the inner rotary wing (6,16) is radially outwardly directed; an inner rotary part (5′), whereinthe inner rotary wing (6, 16) is attached to the inner rotary part (5′);a second stabilizer part (2, 2′), wherein the second stabilizer part (2,2′) is attached to the inner rotary part (5′), wherein the outer rotarypart (4′) with the outer rotary wing (14) moves relative the innerrotary part (5′) with the inner rotary wing (16) up to a point where theouter rotary wing (14) contacts the inner rotary wing (16), and whereinthe first stabilizer part (1, 1′) and the second stabilizer part (2, 2′)are connected to each other with the outer rotary wing (14) and theinner rotary wing (16), wherein the inner rotary part (5′) is rotatablerelative to the outer rotary part (4′) to a predetermined extent,wherein free spaces (18) for a movable coupling piece (19) exist betweenthe outer rotary wing (14) and the inner rotary wing (16); wherein thesecond stabilizer part (2′) is formed as a single piece with the innerrotary part (5′), wherein the outer rotary wing (14) and the innerrotary wing (6) are freely rotatable relative to each other in a regionof the free spaces (18) until the outer rotary wing (14) and the innerrotary wing (6) come to rest at a mutual stop.
 16. The subdividedstabilizer according to claim 15 wherein the second stabilizer part (2,2′) and the inner rotary part (5, 5′)are furnished by a round rod; andwherein the first stabilizer part (1, 1′) is at its end axially alignedattached to the cover flange (8, 8′).
 17. The subdivided stabilizeraccording to claim 15 further comprising a bearing cover (9) attached tothe outer rotary part (4, 4′), wherein the outer rotary part (4) withits outer rotary wing (14) and the inner rotary part (5) with its innerrotary wing (6) find an axial closure through the cover flange (8)connected with the first stabilizer part (1, 1′) and through the bearingcover (9), wherein the free spaces between the outer rotary wing (14)and the inner rotary wing (6) are formed as pressure chambers sealedtoward the outside and inside in a corresponding way and connected to ahydraulic plant.
 18. The subdivided stabilizer according to claim 15further comprising a bearing cover (9, 9′), wherein the outer rotarypart has the shape of a cylindrical casing, wherein the outer rotarypart (4, 4′) is covered on a front side through a cover flange (8′),wherein the cover flange (8′) is connected fixedly against rotation tothe first stabilizer part (1, 1′), wherein the outer rotary part (4, 4′)is delimited an a second front side with the bearing cover (9, 9′),wherein the inner rotary part (5, 5′) is supported in a bore hole of thebearing cover (9, 9′) and in a recess of the cover flange (8, 8′). 19.The subdivided stabilizer according to claim 15 wherein the outer rotarywing (14) and the inner rotary wing (16) are intersected by a commonradial plane.
 20. The subdivided stabilizer according to claim 15wherein the movable coupling piece (19) comprises two equal andoppositely disposed coupling parts (21) equipped with side ways andconically extending guide faces, wherein the coupling parts (21) arecapable of closing the free spaces (18) between the outer rotary wing(14) and the inner rotary wing (16) without play; wherein the couplingparts (21) are disengaged in the decoupled state from the outer rotarywing (14) and from the inner rotary wing (16) such that initially a freeangle of rotation has to be overcome for each direction in case of adifferent load of the first stabilizer part (1, 1′) and of the secondstabilizer part (2, 2′) before the outer rotary wing (14) and the innerrotary wing (16) come to rest.
 21. A subdivided stabilizer withoptimized spring rate, comprising a first stabilizer part (1, 1′); acover flange (8′), wherein the first stabilizer part (1, 1′) is formedas a single piece with the cover flange (8′); an outer rotary part (4′),wherein the cover flange (8′) is formed at the outer rotary part (4′);an outer rotary wing (14) attached to the outer rotary part (4′),wherein the outer rotary wing (14) is radially inwardly directed; aninner rotary wing (6, 16), wherein the inner rotary wing (6, 16) isradially outwardly directed; an inner rotary part (5′), wherein theinner rotary wing (6, 16) is attached to the inner rotary part (5′); asecond stabilizer part (2, 2′), wherein the second stabilizer part (2,2′) is attached to the inner rotary part (5, 5′), wherein the outerrotary part (4′) with the outer rotary wing (14) moves relative theinner rotary part (5, 5′) with the inner rotary wing (6, 16) up to apoint where the outer rotary wing (14) contacts the inner rotary wing(6, 16), and wherein the first stabilizer part (1, 1′) and the secondstabilizer part (2, 2′) are connected to each other with the outerrotary wing (14) and the inner rotary wing (6, 16), wherein the innerrotary part (5, 5′) is rotatable relative to the outer rotary part (4′)to a predetermined extent, wherein free spaces (18) for a movablecoupling piece (19) exist between the outer rotary wing (14) and theinner rotary wing (6, 16); wherein the second stabilizer part (2′) isformed as a single piece with the inner rotary part (5, 5′), a bearingcover (9) attached to the outer rotary part (4, 4′), wherein the outerrotary part (4) with its outer rotary wing (14) and the inner rotarypart (5, 5) with its inner rotary wing (6, 16) find an axial closurethrough the cover flange (8) connected with the first stabilizer part(1, 1′) and through the bearing cover (9), wherein the free spacesbetween the outer rotary wing (14) and the inner rotary wing (6, 16) areformed as pressure chambers sealed toward the outside and inside in acorresponding way and connected to a hydraulic plant, wherein the coverflange (8) is furnished on an inner side in a finite bearing hole (11)for receiving the second stabilizing part (2) with its inner rotary part(5, 5′), wherein the bearing cover (9) comprises a passing throughbearing bore (12) for receiving of the inner rotary part (5, 5′),wherein both the bearing cover (9) and the cover flange (8) are attachedat the outer rotary part (4) with screws or by a welding connection,wherein the inner rotary wing (6) is attached an the inner rotary part(5, 5′) by gear teeth or by clamping.
 22. The subdivided stabilizeraccording to claim 21 wherein the inner rotary part (5) forms one partwith the second stabilizer (2, 2′) and is supported by the bearing cover(9) and the cover flange (8).
 23. The subdivided stabilizer according toclaim 21 wherein the movable coupling piece (19) comprises two equal andoppositely disposed coupling parts (21) equipped with side ways andconically extending guide faces, wherein the coupling parts (21) arecapable of closing the free spaces (18) between the outer rotary wing(14) and the inner rotary wing (16) without play; wherein the couplingparts (21) are disengaged in the decoupled state from the outer rotarywing (14) and from the inner rotary wing (16) such that initially a freeangle of rotation has to be overcome for each direction in case of adifferent load of the first stabilizer part (1, 1′) and of the secondstabilizer part (2, 2′) before the outer rotary wing (14) and the innerrotary wing (16) come to rest.
 24. The subdivided stabilizer accordingto claim 21 wherein the outer rotary wing (14) and the inner rotary wing(6) are freely rotatable relative to each other in a region of the freespaces (18) until the outer rotary wing (14) and the inner rotary wing(6) come to rest at a mutual stop.
 25. The subdivided stabilizer withoptimized spring rate, comprising a first stabilizer part (1, 1′); acover flange (8′), wherein the first stabilizer part (1, 1′) is formedas a single piece with the cover flange (8′); an outer rotary part (4′),wherein the cover flange (8′) is formed at the outer rotary part (4′);an outer rotary wing (14) attached to the outer rotary part (4′),wherein the outer rotary wing (14) is radially inwardly directed; aninner rotary wing (16), wherein the inner rotary wing (6, 16) isradially outwardly directed; an inner rotary part (5′), wherein theinner rotary wing (6, 16) is attached to the inner rotary part (5′); asecond stabilizer part (2, 2′), wherein the second stabilizer part (2,2′) is attached to the inner rotary part (5′), wherein the outer rotarypart (4′) with the outer rotary wing (14) moves relative the innerrotary part (5′) with the inner rotary wing (16) up to a point where theouter rotary wing (14) contacts the inner rotary wing (16), and whereinthe first stabilizer part (1, 1′) and the second stabilizer part (2, 2′)are connected to each other with the outer rotary wing (14) and theinner rotary wing (16), wherein the inner rotary part (5′) is rotatablerelative to the outer rotary part (4′) to a predetermined extent,wherein free spaces (18) for a movable coupling piece (19) exist betweenthe outer rotary wing (14) and the inner rotary wing (16); wherein thesecond stabilizer part (2′) is formed as a single piece with the innerrotary part (5′), a bearing cover (9) attached to the outer rotary part(4, 4′), wherein the outer rotary part (4) with its outer rotary wing(14) and the inner rotary part (5) with its inner rotary wing (6) findan axial closure through the cover flange (8) connected with the firststabilizer part (1, 1′) and through the bearing cover (9), wherein thefree spaces between the outer rotary wing (14) and the inner rotary wing(6) are formed as pressure chambers sealed toward the outside and insidein a corresponding way and connected to a hydraulic plant, a compressionspring (22) supported at the bearing cover (9′) and disposed in a springchamber (23), wherein the spring chamber (23) is formed as a pressurespace and connected to a hydraulic plant through an inlet connectionpiece (24), wherein the coupling piece (19) is loadable with a hydraulicpressure created in the spring chamber (23) opposing the compressionspring (22) on the side disposed remote from the compression spring(22), wherein the hydraulic pressure supports the force of thecompression spring (22), wherein a corresponding inlet opening (25) fora hydraulic pressure creation is disposed in the cover flange (8′). 26.The subdivided stabilizer according to claim 25 wherein the movablecoupling piece (19) comprises two equal and oppositely disposed couplingparts (21) equipped with side ways and conically extending guide faces,wherein the coupling parts (21) are capable of closing the free spaces(18) between the outer rotary wing (14) and the inner rotary wing (16)without play; wherein the coupling parts (21) are disengaged in thedecoupled state from the outer rotary wing (14) and from the innerrotary wing (16) such that initially a free angle of rotation has to beovercome for each direction in case of a different load of the firststabilizer part (1, 1′) and of the second stabilizer part (2, 2′) beforethe outer rotary wing (14) and the inner rotary wing (16) come to rest.27. The subdivided stabilizer according to claim 25 wherein the secondstabilizer part (2, 2′) and the inner rotary part (5, 5′)are furnishedby a round rod; and wherein the first stabilizer part (1, 1′) is at itsend axially aligned attached to the cover flange (8, 8′).
 28. Thesubdivided stabilizer according to claim 25 wherein the outer rotarywing (14) and the inner rotary wing (6) are freely rotatable relative toeach other in a region of the free spaces (18) until the outer rotarywing (14) and the inner rotary wing (6) come to rest at a mutual stop.29. The subdivided stabilizer according to claim 25 wherein the innerrotary part (5) forms one part with the second stabilizer (2, 2′) and issupported by the bearing cover (9) and the cover flange (8).
 30. Thesubdivided stabilizer according to claim 25 wherein the inner rotarywing (16) is disposed an a radial plane together with the outer rotarywing (14) of the outer rotary part (4′), wherein the outer rotary wing(14) and the inner rotary wing (16) extend over a certain axial length,wherein the inner rotary wing (16) and the outer rotary wing are of suchdimensions and disposed such to each other that the inner rotary wing(16) and the outer rotary ring (14) form two radially and oppositelydisposed free spaces (18) between themselves.
 31. A subdividedstabilizer with optimized spring rate, comprising a first stabilizerpart (1, 1′); a cover flange (8′), wherein the first stabilizer part (1,1′) is formed as a single piece with the cover flange (8′); an outerrotary part (4′), wherein the cover flange (8′) is formed at the outerrotary part (4′); an outer rotary wing (14) attached to the outer rotarypart (4′), wherein the outer rotary wing (14) is radially inwardlydirected; an inner rotary wing (16), wherein the inner rotary wing (6,16) is radially outwardly directed; an inner rotary part (5′), whereinthe inner rotary wing (6, 16) is attached to the inner rotary part (5′);a second stabilizer part (2, 2′), wherein the second stabilizer part (2,2′) is attached to the inner rotary part (5′), wherein the outer rotarypart (4′) with the outer rotary wing (14) moves relative the innerrotary part (5′) with the inner rotary wing (16) up to a point where theouter rotary wing (14) contacts the inner rotary wing (16), and whereinthe first stabilizer part (1, 1′) and the second stabilizer part (2, 2′)are connected to each other with the outer rotary wing (14) and theinner rotary wing (16), wherein the inner rotary part (5′) is rotatablerelative to the outer rotary part (4′) to a predetermined extent,wherein free spaces (18) for a movable coupling piece (19) exist betweenthe outer rotary wing (14) and the inner rotary wing (16); wherein thesecond stabilizer part (2′) is formed as a single piece with the innerrotary part (5′), wherein the movable coupling piece (19) comprises aguide part (20) and two equal and oppositely disposed coupling parts(21) equipped with side ways and conically extending guide faces,wherein the coupling parts (21) are capable of closing the free spaces(18) between the outer rotary wing (14) and the inner rotary wing (16)without play.
 32. The subdivided stabilizer according to claim 27further comprising a force transfer element (15) connected fixed againstrotation to the inner rotary part (5), wherein the force transferelement (15) forms a single part with the inner rotary wing (16). 33.The subdivided stabilizer according to claim 31 wherein the movablecoupling piece (19) comprises two equal and oppositely disposed couplingparts (21) equipped with side ways and conically extending guide faces,wherein the coupling parts (21) are capable of closing the free spaces(18) between the outer rotary wing (14) and the inner rotary wing (16)without play; wherein the coupling parts (21) are disengaged in thedecoupled state from the outer rotary wing (14) and from the innerrotary wing (16) such that initially a free angle of rotation has to beovercome for each direction in case of a different load of the firststabilizer part (1, 1′) and of the second stabilizer part (2, 2′) beforethe outer rotary wing (14) and the inner rotary wing (16) come to rest.34. The subdivided stabilizer according to claim 31 wherein the coverflange (8) is furnished on an inner side in a finite bearing hole (11)for receiving the second stabilizing part (2) with its inner rotary part(5), wherein a bearing cover (9) comprises a passing through bearingbore (12) for receiving of the inner rotary part (5), wherein both thebearing cover (9) and the cover flange (8) are attached at the outerrotary part (4) with screws or by a welding connection, wherein theinner rotary wing (6) is attached an the inner rotary part (5) by gearteeth or by clamping.
 35. The subdivided stabilizer according to claim27 further comprising a compression spring (22) supported at a bearingcover (9′) and disposed in a spring chamber (23), wherein the springchamber (23) is formed as a pressure space and connected to a hydraulicplant through an inlet connection piece (24), wherein the coupling piece(19) is loadable with a hydraulic pressure created in the spring chamber(23) opposing the compression spring (22) an the side disposed remotefrom the compression spring (22), wherein the hydraulic pressuresupports the force of the compression spring (22), wherein acorresponding inlet opening (25) for a hydraulic pressure creation isdisposed in the cover flange (8′).
 36. The subdivided stabilizeraccording to claim 27 further comprising a bearing cover (9, 9′),wherein the outer rotary part has the shape of a cylindrical casing,wherein the outer rotary part (4, 4′) is covered an a front side througha cover flange (8′), wherein the cover flange (8′) is connected fixedlyagainst rotation to the first stabilizer part (1, 1′), wherein the outerrotary part (4, 4′) is delimited an a second front side with the bearingcover (9, 9′), wherein the inner rotary part (5, 5′) is supported in abore hole of the bearing cover (9, 9′) and in a recess of the coverflange (8, 8′).
 37. The subdivided stabilizer according to claim 31wherein the outer rotary wing (14) and the inner rotary wing (16) areintersected by a common radial plane.
 38. A subdivided stabilizer withoptimized spring rate, comprising a first stabilizer part (1, 1′); acover flange (8′), wherein the first stabilizer part (1, 1′) is formedas a single piece with the cover flange (8′); an outer rotary part (4′),wherein the cover flange (8′) is formed at the outer rotary part (4′);an outer rotary wing (14) attached to the outer rotary part (4′),wherein the outer rotary wing (14) is radially inwardly directed; aninner rotary wing (16), wherein the inner rotary wing (6, 16) isradially outwardly directed; an inner rotary part (5′), wherein theinner rotary wing (6, 16) is attached to the inner rotary part (5′); asecond stabilizer part (2, 2′), wherein the second stabilizer part (2,2′) is attached to the inner rotary part (5′), wherein the outer rotarypart (4′) with the outer rotary wing (14) moves relative the innerrotary part (5′) with the inner rotary wing (16) up to a point where theouter rotary wing (14) contacts the inner rotary wing (16), and whereinthe first stabilizer part (1, 1′) and the second stabilizer part (2, 2′)are connected to each other with the outer rotary wing (14) and theinner rotary wing (16), wherein the inner rotary part (5′) is rotatablerelative to the outer rotary part (4′) to a predetermined extent,wherein free spaces (18) for a movable coupling piece (19) exist betweenthe outer rotary wing (14) and the inner rotary wing (16); wherein thesecond stabilizer part (2′) is formed as a single piece with the innerrotary part (5′), a sensor (26) for determining a position of themovable coupling piece (19) disposed in the outer rotary part (4′). 39.The subdivided stabilizer according to claim 38 further comprising aforce transfer element (15) connected fixed against rotation to theinner rotary part (5), wherein the force transfer element (15) forms asingle part with the inner rotary wing (16).
 40. The subdividedstabilizer according to claim 38 wherein the movable coupling piece (19)comprises two equal and oppositely disposed coupling parts (21) equippedwith side ways and conically extending guide faces, wherein the couplingparts (21) are capable of closing the free spaces (18) between the outerrotary wing (14) and the inner rotary wing (16) without play; whereinthe coupling parts (21) are disengaged in the decoupled state from theouter rotary wing (14) and from the inner rotary wing (16) such thatinitially a free angle of rotation has to be overcome for each directionin case of a different load of the first stabilizer part (1, 1′) and ofthe second stabilizer part (2, 2′) before the outer rotary wing (14) andthe inner rotary wing (16) come to rest.
 41. The subdivided stabilizeraccording to claim 38 wherein the second stabilizer part (2, 2′) and theinner rotary part (5, 5′) are furnished by a round rod; and wherein thefirst stabilizer part (1, 2′) is at its end axially aligned attached tothe cover flange (8, 8′).
 42. The subdivided stabilizer according toclaim 38 wherein the outer rotary wing (14) and the inner rotary wing(6) are freely rotatable relative to each other in a region of the freespaces (18) until the outer rotary wing (14) and the inner rotary wing(6) come to rest at a mutual stop.
 43. The subdivided stabilizeraccording to claim 38 further comprising a bearing cover (9) attached tothe outer rotary part (4, 4′), wherein the outer rotary part (4) withits outer rotary wing (14) and the inner rotary part (5) with its innerrotary wing (6) find an axial closure through the cover flange (8)connected with the first stabilizer part (1, 1′) and through the bearingcover (9), wherein the free spaces between the outer rotary wing (14)and the inner rotary wing (6) are formed as pressure chambers sealedtoward the outside and inside in a corresponding way and connected to ahydraulic plant.
 44. The subdivided stabilizer according to claim 38wherein the cover flange (8) is furnished on an inner side in a finitebearing hole (11) for receiving the second stabilizing part (2) with itsinner rotary part (5), wherein a bearing cover (9) comprises a passingthrough bearing bore (12) for receiving of the inner rotary part (5),wherein both the bearing cover (9) and the cover flange (8) are attachedat the outer rotary part (4) with screws or by a welding connection,wherein the inner rotary wing (6) is attached an the inner rotary part(5) by gear teeth or by clamping.
 45. The subdivided stabilizeraccording to claim 38 further comprising a compression spring (22)supported at a bearing cover (9′) and disposed in a spring chamber (23),wherein the spring chamber (23) is formed as a pressure space andconnected to a hydraulic plant through an inlet connection piece (24),wherein the coupling piece (19) is loadable with a hydraulic pressurecreated in the spring chamber (23) opposing the compression spring (22)an the side disposed remote from the compression spring (22), whereinthe hydraulic pressure supports the force of the compression spring(22), wherein a corresponding inlet opening (25) for a hydraulicpressure creation is disposed in the cover flange (8′).
 46. Thesubdivided stabilizer according to claim 38 wherein the movable couplingpiece (19) comprises a guide part (20) and two equal and oppositelydisposed coupling parts (21) equipped with side ways and conicallyextending guide faces, wherein the coupling parts (21) are capable ofclosing the free spaces (18) between the outer rotary wing (14) and theinner rotary wing (16) without play.
 47. The subdivided stabilizeraccording to claim 38 further comprising a bearing cover (9, 9′),wherein the outer rotary part has the shape of a cylindrical casing,wherein the outer rotary part (4, 4′) is covered an a front side througha cover flange (8′), wherein the cover flange (8′) is connected fixedlyagainst rotation to the first stabilizer part (1, 1′), wherein the outerrotary part (4, 4′) is delimited an a second front side with the bearingcover (9, 9′), wherein the inner rotary part (5, 5′) is supported in abore hole of the bearing cover (9, 9′) and in a recess of the coverflange (8, 8′).
 48. The subdivided stabilizer according to claim 38wherein the inner rotary wing (16) is disposed an a radial planetogether with the outer rotary wing (14) of the outer rotary part (4′),wherein the outer rotary wing (14) and the inner rotary wing (16) extendover a certain axial length, wherein the inner rotary wing (16) and theouter rotary wing are of such dimensions and disposed such to each otherthat the inner rotary wing (16) and the outer rotary ring (14) form tworadially and oppositely disposed free spaces (18) between themselves.49. The subdivided stabilizer according to claim 38 wherein the outerrotary wing (14) and the inner rotary wing (16) are intersected by acommon radial plane.
 50. A subdivided stabilizer with optimized springrate, comprising a first stabilizer part (1, 1′); a cover flange (8′),wherein the first stabilizer part (1, 1′) is formed as a single piecewith the cover flange (8′); an outer rotary part (4′), wherein the coverflange (8′) is formed at the outer rotary part (4′); an outer rotarywing (14) attached to the outer rotary part (4′), wherein the outerrotary wing (14) is radially inwardly directed; an inner rotary wing(16), wherein the inner rotary wing (6, 16) is radially outwardlydirected; an inner rotary part (5′), wherein the inner rotary wing (6,16) is attached to the inner rotary part (5′); a second stabilizer part(2, 2′), wherein the second stabilizer part (2, 2′) is attached to theinner rotary part (5′), wherein the outer rotary part (4′) with theouter rotary wing (14) moves relative the inner rotary part (5′) withthe inner rotary wing (16) up to a point where the outer rotary wing(14) contacts the inner rotary wing (16), and wherein the firststabilizer part (1, 1′) and the second stabilizer part (2, 2′) areconnected to each other with the outer rotary wing (14) and the innerrotary wing (16), wherein the inner rotary part (5′) is rotatablerelative to the outer rotary part (4′) to a predetermined extent,wherein free spaces (18) for a movable coupling piece (19) exist betweenthe outer rotary wing (14) and the inner rotary wing (16); wherein thesecond stabilizer part (2′) is formed as a single piece with the innerrotary part (5′), wherein the outer rotary wing (14) and the innerrotary wing (16) come to rest on a mutual stop.
 51. The subdividedstabilizer according to claim 50 further comprising a force transferelement (15) connected fixed against rotation to the inner rotary part(5), wherein the force transfer element (15) forms a single part withthe inner rotary wing (16).
 52. The subdivided stabilizer according toclaim 50 wherein the cover flange (8) is furnished on an inner side in afinite bearing hole (11) for receiving the second stabilizing part (2)with its inner rotary part (5), wherein a bearing cover (9) comprises apassing through bearing bore (12) for receiving of the inner rotary part(5), wherein both the bearing cover (9) and the cover flange (8) areattached at the outer rotary part (4) with screws or by a weldingconnection, wherein the inner rotary wing (6) is attached an the innerrotary part (5) by gear teeth or by clamping.
 53. The subdividedstabilizer according to claim 50 further comprising a compression spring(22) supported at a bearing cover (9′) and disposed in a spring chamber(23), wherein the spring chamber (23) is formed as a pressure space andconnected to a hydraulic plant through an inlet connection piece (24),wherein the coupling piece (19) is loadable with a hydraulic pressurecreated in the spring chamber (23) opposing the compression spring (22)an the side disposed remote from the compression spring (22), whereinthe hydraulic pressure supports the force of the compression spring(22), wherein a corresponding inlet opening (25) for a hydraulicpressure creation is disposed in the cover flange (8′).
 54. Thesubdivided stabilizer according to claim 50 wherein the inner rotarypart (5) forms one part with the second stabilizer (2, 2′) and issupported by a bearing cover (9) and the cover flange (8).
 55. Thesubdivided stabilizer according to claim 50 wherein the movable couplingpiece (19) comprises a guide part (20) and two equal and oppositelydisposed coupling parts (21) equipped with side ways and conicallyextending guide faces, wherein the coupling parts (21) are capable ofclosing the free spaces (18) between the outer rotary wing (14) and theinner rotary wing (16) without play.
 56. The subdivided stabilizeraccording to claim 50 further comprising a sensor (26) for determining aposition of the movable coupling piece (19) disposed in the outer rotarypart (4′).
 57. The subdivided stabilizer according to claim 50 whereinthe inner rotary wing (16) is disposed an a radial plane together withthe outer rotary wing (14) of the outer rotary part (4′), wherein theouter rotary wing (14) and the inner rotary wing (16) extend over acertain axial length, wherein the inner rotary wing (16) and the outerrotary wing are of such dimensions and disposed such to each other thatthe inner rotary wing (16) and the outer rotary ring (14) form tworadially and oppositely disposed free spaces (18) between themselves.58. The subdivided stabilizer according to claim 50 wherein the outerrotary wing (14) and the inner rotary wing (16) are intersected by acommon radial plane.